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Initially, Jean Cocteau and Henri Alekan clashed over the filming style. Alekan wanted to use soft focus to create his version of what a fairy tale would look like. Cocteau, however, insisted a more hard-edged style would make even the most fantastic scenes seem grounded in reality. After the first few days of shooting, Alekan declared the rushes laughably bad. As Cocteau persisted in pursuing his personal vision of the film, the cinematographer gradually came around.
The effect of the candles lighting themselves as the merchant passes them was achieved by blowing them out and then running the film in reverse as he walked backward past them. The entire sequence was done in one long take and reversed - a quick glimpse of the fireplace shows the flames appearing to move downward.
The first screening took place before the staff of the studio at Joinville. Jean Cocteau was so nervous, he invited his friend Marlene Dietrich, whose hand he held tightly as the film unwound. The response, however, was enthusiastic.
The look and decor of the film was influenced by the work of nineteenth-century artist and engraver Gustave Doré, most famous for illustrating a nineteenth century French edition of "Don Quixote". Doré's illustrations for that novel are so famous that they continue to be reprinted today.
During the shooting of the film, Jean Cocteau became very ill because of a bad skin disease and eventually had to be hospitalized. While he was recovering, René Clément served as the director.
Jean Cocteau used several different kinds of film stock because of the difficulty of getting stock immediately after the war. He claimed that the different visual textures added to the poetic effect of the film.